JB/T 7871.4-1999 This standard is a revision of JB/T 7871.4-95 "Side plates for general-purpose and slash-type paddy field plows". During the revision, only editorial changes were made according to relevant regulations, and the main technical content remained unchanged. This standard specifies the type and size, technical requirements and acceptance rules for the side plates of general-purpose and slash-type paddy field plows. This standard is applicable to the side plates of general-purpose and slash-type paddy field plows. This standard was first issued in 1977 as NJ 158-77, first revised in 1986 as GB 6248.4-86, and adjusted to JB/T 7871.4-95 in April 1996. JB/T 7871.4-1999 General-purpose and slidable paddy field plow side plates JB/T7871.4-1999 Standard download decompression password: www.bzxz.net

ICS65.060.20
Standard of the Machinery Industry of the People's Republic of China
JB/T7871.1~7871.4-1999
General-purpose and lift-throwing type moldboard ploughs for paddy field-bottow
Published on September 17, 1999
State Machinery Industry Bureau
Implemented on January 1, 2000bzxZ.net
Standard of the Machinery Industry of the People's Republic of China
General-purpose and lift-throwing type moldboard ploughs forpaddyfield-LandsideJB/T7871.4-1999
Replaces JB/T7871.4-—95
This standard specifies the types and dimensions, technical requirements and acceptance rules of general-purpose and cross-fort paddy field plow-type side plates. This standard is applicable to general-purpose and cross-fort paddy field plow-type side plates. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T13481988 Ductile iron castings
3 Types and dimensions
3.1 General-purpose plow side plates
3.1.1 General-purpose plow side plates are divided into two types: front plow side plates and rear type side plates. The rear plow side plate is used for the last plow body of the single-plow type and multi-plow. The front side plate is used for the other plow bodies of the multi-plow except the rear one. 3.1.2 The dimension tolerance of the universal front and rear plow side plates shall comply with the provisions of Figure 1 and Table 1. Two @Φ11 connection mounting holes are allowed to adopt other types, but universal interchangeability must be guaranteed. The types and dimensions of the C-25 Shenbao type plow side plates are shown in Appendix A (Suggested Appendix). 3.2
Name of plow side plate
Front plow side plate
Rear plow side plate
Width of plow body
Approved by the State Bureau of Machinery Industry on September 17, 1999cm
Implemented on January 1, 2000
Technical requirements
JB/T7871.41999
Universal type side plate
4.1 Type side plate shall be made of QT450-10 material specified in GB/T1348. 4.2T surface shall be hardened, and the depth of hardened layer shall be 2~3mm. 4.3 The surface shall be straight and smooth, and casting defects such as bulges are not allowed. 5 Acceptance rules
5.1 The plow side panels must be inspected and qualified by the manufacturer's technical inspection department before they can be assembled or shipped out of the factory. 5.2 The ordering unit can conduct random inspections on the side panels according to this standard, and the number of random inspections shall be negotiated by both parties. If there are unqualified ones in the random inspection results, the number shall be doubled for re-inspection. If there are still unqualified ones, they will not be accepted. 6 Marking and packaging
6.1 When the side panels are shipped, they should be coated with rust-proof agent and tied into groups firmly and neatly, and then packaged and shipped. 6.2 Each package should be accompanied by the following documents and marks: a) Plow side panel code and quantity;
b) Quality inspection certificate;
c) Factory batch number;
d) Manufacturer's name.
JB/T7871.4-1999
Appendix A
(Suggestive Appendix)
Cast-type side panels
For the types and dimensions of the cask-type side panels, see Figure A1. 215
Figure A1C-25 Plow side panels
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